Possible Clues:

• There's a scar where they're down at the back
• Vertebral column parts
• South African capital loses heart and bones
• Vertebrae formations
• Bones may be religiously significant items, not half
• Discovers a craniologist hoarding bones
• Bones discovered in west side of Californian capital
• Pelvic parts
• Vertebral bones
• Triangular body parts